Adding device.



No. 781,401. PATENTED JAN. 31, 1905.

I J. M. CHAPPELL.

ADDING DEVICE.

APPLIGATION FILED FEB. 9. 1904.

2 BHBETSSHEBT l.

PATENTED JAN. 31, 1905.

J. M. CHAPPBLL.

ADDING DEVICE.

Arrmornol FILED une, 1904.

2 SHEETS-SHEET 2.

jez/6125071' Worlzyg Patented January 31, 1905.

PATENT OFFICE.

JOHN M. CHAPPELIJ, OF CHICAGO, ILLINOIS ADDING DEVICE.

SPECIFICATION' forming part of Letters Patent No. 'TS1/ 1.01, dated January 31, 1905.

Application filed February 9, 1904:. Serial No. 192,824.

T0 LI/Z wle/0m, t may concern:

Be it known that l, JOHN M. CHAPPELL, a citi- Zen of the United States, residing at Chicago, county of Cook, State of Illinois, have invented a certain new and useful Improvement in Adding Devices; and I declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification.

My invention relates in general to mechanical registering devices, and more particularl v to a device for indicating the total amount of a series of individual successively-registered amounts. Itis frequently convenient to have at hand for reference a record of the total of a plurality of separate amounts-suclnfor instance,

Aas the total amount of money expended for a plurality of purchases. To keep such a record by notation requires that each successive amount be noted and added to the total of the preceding' amounts.

The primary object of my invention is to provide a mechanical device upon which may be successively registered individual amounts and which will at all times indicate the total of the individual registered amounts.

A further objectof my invention is to provide an adding device which will be simple in construction, inexpensive in manufacture, and convenient in use.

My invention, generally described, consists in a dial, a pointer -movable relatively to said dial, a scale and relatively movable coperating indicating device, and means actuated by said pointer whereby the revolutions of the pointer around the dial are registered on the scale by the relative movement between the scale and its cooperating tindicating device.

My invention will be more fully described hereinafter with reference to the accompanying drawings, in which the same is illustrated as embodied in two convenient and practical forms, and in which- Figure 1 is a side elevational view; Fig. 2, a plan view; Fig. 3, a vertical sectional view on line 8 3, Fig. 1; Fig. 4, a plan view of a modification; Fig. 5, a central sectional view on line 5 5, Fig. L; and Fig. 6, asectional plan View on line 6 (5, Fig. 5.

Similar reference characters are used to designate similar parts in the several iigures of the drawings.

Referring more particularly to Figs. l, 2, and 3, reference character A designates a base of any suitable size and shape which, for convenience, is shown as consisting in an inverted metal cup. B designates a tube mounted upon the base in any convenient manner-such, for instance, as by means of screws b, extending through the top of the base and engaging a laterally-projecting flange B,surrounding the bottom of the tube. B2 designates adial projecting' horizontally from the upper end of the tube and provided with graduations on its upper surface, as indicatedin Fig. 2. C designatesa disk located concentrically above the dial BTa and having a radially-projecting pointer c, which extends over the graduations ou the dial. C2 indicates asemicircular nut projecting concentrically below the disk C and litting within the upper end of the tube B. The screw-threaded opening in the nut is preferably extended upwardly into a post C/, projecting above the disk C. A groove c2 is provided in the outer surface of the nut, near the lower end thereof, into which extends a set-screw if, adjustably mounted in thc tube B. D designates a screw-threaded rod located concentricall y in the tube B and engaging the screw-threaded opening in the nut C and post C'. Fixed to the lower end of the rod D is a collar D, from which projects a pointer (Z, the latter extending through a vertical slot formed in the tube B. A pin E is adapted to be projected upwardly through an openingc, formed through the dial B72 near the periphery thereof. The pin E is mounted upon the outer end of a short lever E, pivoted between ears d, supported beneath the dial B2. A second lever E2 is pivotally supported between ears c2, depending from the under surface of the dial. The outer end of the lever E2 extends above the inner end of the lever E', while the inner end of the lever F2 is located in the path of movement of the pointer d.

The operation of the embodiment of my in vention above described is as follows: IVhen itis desired to register an amount, the disk C is rotated by g'rasping' the post C and the pointer c thereby moved with respect to the graduations on the dial a distance corresponding to the desired amount to be registered. Subsequent amounts are registered by continuing the rotation of the pointer c with respect to the dial. The rotation of the disk C through the screw-threaded engagement between the nut and post carried thereby and the rod D moves the latter upwardly a distance corresponding to the pitch of the screwthreads. The number of rotations of the pointer c with respect to the dial is therefore indicated by theposition of the indicatingdevice Z with respect to the scale marked on the exterior of the tube B adjacent to the slot therethrough. The pitch of the screw-threaded rod D is preferably such that each revolution of the pointer c elevates the indicating device (l the distance between the graduations on the tube indicated in Fig. l. vWhen the limit of the upward movement of the rod D has been reached, the indicating device (Z engages the inner end of the lever Ffand rocks the same, so that the lever E will be oscillatcd and the pin E, carried thereby, projected upwardly through the opening e in the dial, indicating the fact that the disk C can be rotated no further. If desired, the registering' capacity of the device may be doubled by numbering the graduations on the dial in both directions, as shown in Fig. 2, and numbering the grad uations at one side of the slot progressively upwardly and at the other side of the slot progressively downwardly, so that when the limit of rotation of the disk in one direction has been reached it may be rotated in an opposite direction andthe total rotations indicated by the position of the device Z with respect to the cooperating scale.

In Figs. 4, 5, and 6 I have illustrated a modilied embodiment of my invention, in which the number of revolutions of the pointer c with respect to the dial B2 is so registered as to be visible through the dial. In such modification of myinvention the base A, tube B, disk C, screw-threaded rod D/, and collar D thereon are the same in construction and operation as above described in connection with Figs. 1, 2, and 3. In lieuof the indicating' device Z and cooperating scale marked on the tube B at either side of they slot?) a sleeve F is placed around the tube B, at the upper end of which a disk F2 is carried. The disk F2 may conveniently conform in diameter to the dial B2, and is preferably located immediately under the same. An opening' 3 is provided interior of the sleeve F is provided with a l spiral groove f, into which extends a projection fZ/, carried by the collar D, and which passes through the slot Z) in the tube B.

The operation of the embodiment of my invention illustrated in Figs. e, 5, and 6 is as follows: The disk C is rotated with respect to the dial so that the pointer c will indicate the desired amount on the dial in the same manner as described in connection with Figs. 1, 2, and 3. As the collar D is carried upwardly by the rod D' the sleeve F is rotated through the engagement of the projection d with the spiral groove f, so that the rotations of the pointer c with respect to the dial will be indicated by the movement of the disk F2 beneath the opening' 723 in the dial. The pitch of the groove f is such that each revolution of the pointer c with respect to the dial rotates the disk F the distance between the graduatiiig-marks thereon. The limit of the upward movement of the rod D may be in* dicated by a characteristic mark on the disk W, which will be exposed through the opening f/f in the dial when the limit is reached.

From the foregoing description it will be observed that I have invented an improved registering device by means of which the total of a plurality of successively-registered amounts is at all times indicated, so that a number of individual amounts may be added together by separately registering the same on the device.

\Vhile I have described more or less precisely the details of construction, I do not wish to be understood as limiting myself thereto,4

as I contemplate changes in form, the proportion of parts` and the substitution of equivalents as circumstances may suggest or render expedient without departing from the spirit of my invention.

Having now fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. In an adding device, the combination with a dial, of a vertical tube upon which said dial is rigidly mounted, a disk rotatively mounted on said dial, a pointer on said disk extending over the graduations of the dial, a nut secured to said disk located within the upper end of said tube, a screw-threaded rod engaging' said nut and located concentrically within said tube, a scale, an indicating device movable relatively to said scale, and mechanism actuated by said serew-tl'ireaded rod for relatively moving said scale and cooperating indicating device.

Q. In an adding device, the combination with a dial, of a vertical tube upon which said dial is rigidly mounted, adisk rotatively mounted on said dial, a pointer on said disk extending over the graduations of the dial, anut secured to said disk located within the upper end of in the periphery of the dial, through which the said tube, a screw-threaded rod engaging' said The l nut and located concentrlcally within said tube,

graduations on the disk F2 may be read.

IOO

IIO

a collar fitting within said tube and rigidly secured to the lower end of said rod, a scale, an indicating device, and means actuated by said collar for relatively moving said scale and indicating device.

3. In an adding device, the combination with a dial, of a vertical tube upon which said dial is rigidly mounted, said tube having a vertical slot therethrough with graduations thereon, a pointer movable relatively to said dial, an indicating device extending through the slot of said tube, and mechanism actuated by said pointer for elevating said indicating device and thereby registering the rotations of the pointer with respect to its dial on said scale.

4. In an adding device, the combination with a dial, ot' a vertical tube to which said dial is secured, said tube having a vertical slot therethrough with graduations thereon, a pointer movable relatively to said dial, a nut rigidly secured to said pointer and located within the upper end ot' said tube, a screw-threaded rod in engagement with said nut and located concentrically within said tube, a collar secured to the lower end of said rod, an indicating device carried by said collar and extending through the slot in said tube whereby the position of said collar and consequently the number of rotations of the pointer with respect to its dial are registered on said graduations.

5. In an adding device, the combination with a dial, of a vertical tube upon which said dial is mounted, a disk rotatively mounted on said dial, a pointer on said disk extending over the graduations of the dial, a post projecting concentrically above said disk by means of which it is rotated, a nut secured to the under side of said disk and located within the upper end of said tube, the screw-threaded opening in said nut being continued upwardly within said post, a rod in screw-threaded engagement with said nut, a scale, an indicating device movable relatively to said scale, and means actuated by said rod for relatively moving said scale and indicating device.

6. In an adding device, the combination with a dial, of a tube at the upper end of which said dial is mounted, a pointer movable relatively to said dial, a nut connected to said pointer and located within the upper end of said tube, a screw-threaded rod in engagement with said nut, a scale, an indicating device movable relatively to said scale, and visual means for automatically indicating the limit of the relative movement between said indicating device and scale.

7. In an adding device, the combination with a dial, of a pointer movable relatively to said dial, a' vertical tube on the upper end of which said dial is mounted, a nut carried by said pointer and rotatively located within the upper end of said tube, a screw-threaded rod in engagement with said nut, a collar secured to the lower end ot' said rod, a pointer extending through a vertical slot in said tube and carried by said collar, a lever pivoted to the under side of said dial, a pin carried by said lever and adapted to be elevated through a hole in said dial, and means for oscillating said lever to project said pin above the face of the dial actuated by the pointer carried by said collar when the latter reaches the limit of its upward movement.

In testimony whereoil I sign this specification in the presence ot' two witnesses.

JOHN M. CHAPPELL. VVitnesses:

GEO. L. VVILK'nRsoN, C. C. CUNNINGHAM. 

